872585387591 has 2 divisors, whose sum is σ = 872585387592. Its totient is φ = 872585387590.

The previous prime is 872585387573. The next prime is 872585387617. The reversal of 872585387591 is 195783585278.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872585387591 is a prime.

It is a super-2 number, since 2×872585387591² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872585387291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436292693795 + 436292693796.

It is an arithmetic number, because the mean of its divisors is an integer number (436292693796).

Almost surely, 2^872585387591 is an apocalyptic number.

872585387591 is a deficient number, since it is larger than the sum of its proper divisors (1).

872585387591 is an equidigital number, since it uses as much as digits as its factorization.

872585387591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344000, while the sum is 68.

The spelling of 872585387591 in words is "eight hundred seventy-two billion, five hundred eighty-five million, three hundred eighty-seven thousand, five hundred ninety-one".